Prism Binoculars

This is an aluminum instrument with black finish. The barrels are covered with black leather. The objective lenses are 30 mm diameter. The eye end of the left prism housing is marked “MILITARY STEREO / 6 X 30” and “5409-1942.” That on the right is marked “BAUSCH & LOMB OPTICAL CO. / ROCHESTER, N.Y. U.S.A.” and “DALE BROWN.” Each eyepiece can be focused, and each has a diopter scale. The case is brown leather. A tag in the accession file indicates that this instrument was in the U.S. Naval Observatory repair shop in 1944.
Currently not on view
Object Name
date made
ca 1940
Bausch & Lomb
closed: 2 7/16 in x 6 1/2 in x 4 3/32 in; 6.1976 cm x 16.51 cm x 10.3886 cm
place made
United States: New York, Rochester
ID Number
catalog number
accession number
Science & Mathematics
World War II
See more items in
Medicine and Science: Physical Sciences
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Sally Ann Brown, in memory of Capt. Dale Brown
Additional Media

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